Experimental Study on Iso-octane HCCI Combustion Characteristics by the Use of a Rapid Compression Machine
|Course||Power Machinery and Engineering|
|Keywords||Power Machinery and Engineering Isooctane HCCI Burning Characteristics Rapid Compression|
Indigenously developed fast compressor isooctane HCCI pilot study isooctane HCCI Combustion . First the characteristics of the experimental device to determine the boundary conditions , to determine the isooctane mixture combustion process parameter calculation method ; then isooctane HCCI combustion model of a mixed gas of the excess air coefficient , into the influence of boundary conditions such as a temperature of the combustion trials. Chemical reaction kinetics and combustion theory , research and analysis of the test results , and found that the regularity . Determine the various combustion conditions parameters through the combustion analysis under different combinations of combustion conditions , the impact of burning law , including the maximum pressure of the combustion pressure increases the rate of heat release rate , heat release , ignition delay period , the reaction temperature and combustion characteristics the impact of the law . The study of the two - part test . The first is the intake air temperature influence on the combustion process , followed by concentration of the mixture on the combustion process . The test found that the decreasing excess air ratio , combustion discharge heat and combustion temperature of the upward trend , the curve is steep . In the excess air coefficient is very small both the intake air temperature in the fuel concentration in large (λ = 2) for the combustion process is relatively weak, but with the increase of the excess air coefficient , inlet temperature for the whole of the combustion process also gradually enhanced. Inlet temperature isooctane HCCI combustion through a pilot study law . I.e. , as the intake air temperature increases , iso- octane HCCI combustion starting point in advance, the heat release rate and pressure rise rate to discharge the heat and the reaction temperature curve steeper .